Battery.



No. 790,866. PATENT-ED MAY 23, 1905.

W. 0. BANKS.

BATTERY.

APPLICATION Hum JAN. 6. 1905.

bz wvibne M, I v gmgantoz "I Patented May 23, 1905.

PATENT Trice.

WILLIAM C. BANKS, OF NEW YORK, N. Y.

BATTERY.

SPECIFICATION forming part of Letters Patent No. 790,866, dated May 23,1905.

Original application filed April 11, 1901, Serial No. 55,346. Divided and this application filed January 5, 1905. Serial 1'0 a/M whom it nuty concern:

Be it known that I, WILLIAM C. BANKS, a citizen of the United States of America, residing at New York city, in the county and State of New York, have invented certain new and useful Improvements in Batteries, of which the following is a specification, reference being had to the accompanying drawings, forming part of the same, in which- Figure 1 is a centralvertical sectional view of a battery embodying my invention, and Fig. 2 is a view in perspective of the coneshaped portion of the basket employed to support the depolarizer.

The invention relates to primary batteries, and particularly to such as employ a perforated basket holding a depolarizer as their second or negative element, and my application, filed January 5, 1905, Serial No. 239,706, for a patent thereon is a division of my application, filed April 11, 1901, Serial No. 55,346. I'have' used various arrangements of parts including such a basket, including the one shown, and my purpose in arranging the parts as shown is to get an even discharge from the battery and an even action in it, and for this purpose I have arranged the zinc and the opposing face of the basket in such relative positions and constructed them of such relative forms that I attain the end desired, though at the same time I provide for using a basket of decreasing capacity, the structure securing these combined advantages being the subject-matterof the invention herein claimed.

J is the jar or cell. Thedimensions are not necessarily as shown; but a jar six by eight is found satisfactory. It is shown with a cover G, which may be of tin. Through the cover a rod or terminal R is inserted, and it passes through and supports what I call the negative element N, shown in the form of a metallic basket with perforated walls. The

basket is held tightly to the cover by the conjoint action of the rod R, nut P, (which also constitutes a bindingpost,) and nut n on the lower end of rod R. I An insulator composed of blocks I and I (here porcelain) is interposed between the top of the basket, the cover, and the rod R and binding-post. The bottom of the basket is preferably formed of a cone-shaped piece of perforated tin, the diameter at the larger end being preferably about that of basket Nand at the smaller end about that of the rod R and set with the small end upward. It is usually filled to within an inch of the top with a depolarizing agent, such as black oxid of copper. To the outer wall of the basket I secure a number of porcelain lugs Z, and 'on' them as supports I mount the zinc Z. A terminal t, preferably insulated by rubber tubing r and by an insulating substance t', leads from the zinc to a pointwithout the battery.

Of course many minor changes might be made in the construction without departing from the spirit or even the letter of the invention, so long as we preserve an annular basket with decreasing area and leave its outer walls parallel with the inner walls of the zinc, that their separation may always be uniform, since it is that feature of the construction which I here seek to claim, because it is that feature which produces the improved result in evenness of action which I have named.

What I claim as my invention, and desire to secure by Letters Patent, is

A battery element of annular form, the annular part being hollow and having one vertical face and one face inclined as set forth, whereby the element presents a down wardlydecreasing horizontal area, within its walls, and at the same time will maintain a uniform distance from an opposite vertical face of a second battery element, all substantially as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses, this 25th day of April, 190%. 4

WVM. C. BANKS.

Witnesses:

L. I). CHURCH, A. G. N. VERMILYA. 

